#!/bin/sh
# buildpage -- small markdown wrapper with frontmatter support
set -e
die() {
echo "$*" 1>&2
exit 1
}
[ -z "$1" ] && die "usage: buildpage FILE"
# Print the header
cat <<EOM
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width,initial-scale=1">
<!-- Inspired by https://www.swyx.io/css-100-bytes/ -->
<style>
html {
max-width: 70ch;
padding: 3em 1em;
margin: auto;
font-size: 1em;
font-family: sans-serif;
}
footer {
font-size: .8em;
}
code {
font-family: consolas, courier, monospace;
}
EOM
if [ "$(basename "$1")" != "root-index.md" ]; then
cat <<EOM
blockquote, pre {
background: #f2f2f2;
overflow: auto;
padding: 10px;
border: 2px solid black;
}
EOM
fi
echo "</style>"
# Print the title, if we find it in the frontmatter
if [ "$(head -n1 "$1")" = "---" ]; then
title="$(tail +2 "$1" | sed '/^---$/q' | grep '^title:' | sed 's/title: *//')"
nofooter="$(tail +2 "$1" | sed '/^---$/q' | grep '^nofooter:' | sed 's/nofooter: *//')"
[ -n "$title" ] && printf "<title>$title\n"
start=$(awk '/^---$/ { c++; if (c == 2) { printf "%d\n", NR + 1; exit } }' "$1")
else
start=1
fi
printf "\n\n"
# Render the markdown starting from the end of the frontmatter!
tail +$start "$1" | cmark --unsafe
# Print a nav footer
if [ -z "$nofooter" ]; then
cat <